A fast new block-matching image registration algorithm is proposed and tested through simulation. It first finds the relative image displacement to the nearest pixel by searching within a rectangular window using logarithmicallydecreasing step sizes. It then refines the displacement estimate to subpixel accuracy through bilinear interpolation of the sum-ofabsolute-differences block error metric...

Multicomponent seismic images are composed of different combinations of downgoing and upgoing wavefields. Each wave mode has different propagation velocity and polarization direction and thus carries unique, direction-dependent information about the subsurface. Differences in propagation velocity cause events in convertedor shear-wave images to appear at later times than the compressional-wave ...

This paper presents a template-based inspection application for change detection. This implementation aims to the inspection of targets which appear at an arbitrary orientation, such as undervehicle surfaces in vehicle inspection stations. The operation of the application is divided in two phases: image registration and change detection. Image registration aims to accurately detect the spatial ...

Accurate registration is crucial for medical image analysis. In this letter, we proposed an improved Demons technique (IDT) for medical image registration. The IDT improves registration quality using orthogonal gradient information. The advantage of the proposed IDT is assessed using 14 medical image pairs. Experimental results show that the proposed technique provides about 8% improvement over...

The main focus of research on multimedia systems has been directed towards the design and development of techniques for the management of visual information. Both in images and image sequences, shape and spatial constraints are essential features associated with these objects. This paper presents an image retrieval system called OBIR (Object-Based Image Retrieval). We discuss this and a new his...

Image registration is the fundamental task used to match two or more partially overlapping images and stitch these images into one panoramic image comprising the whole scene. To register two images, the coordinate transformation between a pair of images must be found. In this paper, a multiresolution feature-based method is developed to efficiently estimate an eight-parametric projective transf...

The task of determining the mapping between a pair of images is called image matching and is fundamental in image processing. Prior information is essential to the inference of the mapping because the image features on which matching is based are sparsely distributed and, consequently, underconstrain the problem. In this paper, we describe the Bayesian approach to image matching and introduce s...

Image registration is one of the important image processing procedures in remote sensing; it has been studied and developed for a long time. However, until now, it is still rare to find an accurate, robust, and automatic image registration method, and most existing image registration methods are designed for particular application. At present, high resolution remote sensing images have made it ...